For those who have had big babies...

My done was 7lb12oz 2 weeks early. I have a new doctor this time around and she thought that was pretty big. I brought this up to her because my son also broke his collar bone on the way out, had severe bruising and a huge scrape on his scalp. She thought it best that I do my glucose screening early (24 weeks) and then go to biweekly appointments. I didn't have GD the first time. However I had a very old doctor that just let me eat a snickers instead of doing the drink and I'm wondering if maybe the results weren't accurate? Has anyone else had to do it early? I'll also have growth scans in my third trimester.